AKD PDMM User Guide | 39.10 MOTOR.IMTR
The following rule should generally be used:
In which
I
d
is the value for IL.IMID, the preset rotor flux building current,
I
r
is the name plate
phase current,
cosϕ
is the name plate power factor at rated and operation, and
0.8
is an empir-
ical factor (accounts for the angle error due to voltage drop on the leakage induction).
Related Topics
39.10 MOTOR.IMTR
General Information
Type
R/W
Description
Rotor time constant.
Units
Ms
Range
1 to 16,000
Default
Value
100
Data Type
Integer
Start Version M_01-08-00-000
Description
The rotor time constant is calculated as the ratio between rotor magnetizing inductance L
m
and
rotor resistance R
r
from the following equivalent circuit of an induction machine.
Alternatively, the rotor time constant can be estimated from the rated current, magnetizing cur-
rent (MOTOR.IMID (pg 381)) and rated slip frequency as follows:
Kollmorgen™ | December 2012
382
Содержание AKD PDMM series
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